From 2b0978632602e889e8252d3be215ec9c163be6be Mon Sep 17 00:00:00 2001
From: skypjack <michele.caini@gmail.com>
Date: Wed, 15 Apr 2026 09:09:21 +0200
Subject: [PATCH] stl: version.hpp and ENTT_HAS_VERSION macro

---
 CMakeLists.txt              | 1 +
 src/entt/config/config.h    | 5 ++---
 src/entt/core/ranges.hpp    | 8 ++++----
 src/entt/entity/ranges.hpp  | 8 ++++----
 src/entt/entt.hpp           | 1 +
 src/entt/stl/functional.hpp | 5 ++---
 src/entt/stl/iterator.hpp   | 5 ++---
 src/entt/stl/memory.hpp     | 5 ++---
 src/entt/stl/version.hpp    | 9 +++++++++
 9 files changed, 27 insertions(+), 20 deletions(-)
 create mode 100644 src/entt/stl/version.hpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3409fc1ab..a108c8bfa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -212,6 +212,7 @@ if(ENTT_INCLUDE_HEADERS)
         stl/type_traits.hpp
         stl/utility.hpp
         stl/vector.hpp
+        stl/version.hpp
         tools/davey.hpp
         entt.hpp
         fwd.hpp
diff --git a/src/entt/config/config.h b/src/entt/config/config.h
index 308459922..e98f63c83 100644
--- a/src/entt/config/config.h
+++ b/src/entt/config/config.h
@@ -5,6 +5,7 @@
 #    include <entt/ext/config.h>
 #endif
 
+#include "../stl/version.hpp"
 #include "version.h"
 
 // NOLINTBEGIN(cppcoreguidelines-macro-usage)
@@ -23,9 +24,7 @@
 #    define ENTT_CATCH if(false)
 #endif
 
-#if __has_include(<version>)
-#    include <version>
-#
+#ifdef ENTT_HAS_VERSION
 #    if defined(__cpp_consteval)
 #        define ENTT_CONSTEVAL consteval
 #    endif
diff --git a/src/entt/core/ranges.hpp b/src/entt/core/ranges.hpp
index c1d062c70..fe58404ef 100644
--- a/src/entt/core/ranges.hpp
+++ b/src/entt/core/ranges.hpp
@@ -1,9 +1,9 @@
 #ifndef ENTT_CORE_RANGES_HPP
 #define ENTT_CORE_RANGES_HPP
 
-#if __has_include(<version>)
-#    include <version>
-#
+#include "../stl/version.hpp"
+
+#ifdef ENTT_HAS_VERSION
 #    if defined(__cpp_lib_ranges)
 #        include <ranges>
 #        include "iterator.hpp"
@@ -17,4 +17,4 @@ inline constexpr bool std::ranges::enable_view<entt::iterable_adaptor<Args...>>{
 #    endif
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/entt/entity/ranges.hpp b/src/entt/entity/ranges.hpp
index a80c84edd..ebb379559 100644
--- a/src/entt/entity/ranges.hpp
+++ b/src/entt/entity/ranges.hpp
@@ -1,9 +1,9 @@
 #ifndef ENTT_ENTITY_RANGES_HPP
 #define ENTT_ENTITY_RANGES_HPP
 
-#if __has_include(<version>)
-#    include <version>
-#
+#include "../stl/version.hpp"
+
+#ifdef ENTT_HAS_VERSION
 #    if defined(__cpp_lib_ranges)
 #        include <ranges>
 #        include "fwd.hpp"
@@ -23,4 +23,4 @@ inline constexpr bool std::ranges::enable_view<entt::basic_group<Args...>>{true}
 #    endif
 #endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/entt/entt.hpp b/src/entt/entt.hpp
index 334b178d9..f215dc9d3 100644
--- a/src/entt/entt.hpp
+++ b/src/entt/entt.hpp
@@ -86,4 +86,5 @@ namespace entt::stl {}
 #include "stl/type_traits.hpp"
 #include "stl/utility.hpp"
 #include "stl/vector.hpp"
+#include "stl/version.hpp"
 // IWYU pragma: end_exports
diff --git a/src/entt/stl/functional.hpp b/src/entt/stl/functional.hpp
index 3fdc6c313..55c455f7c 100644
--- a/src/entt/stl/functional.hpp
+++ b/src/entt/stl/functional.hpp
@@ -2,12 +2,11 @@
 #define ENTT_STL_FUNCTIONAL_HPP
 
 #include "../config/config.h"
+#include "version.hpp"
 
 /*! @cond ENTT_INTERNAL */
 #ifndef ENTT_FORCE_STL
-#    if __has_include(<version>)
-#        include <version>
-#
+#    ifdef ENTT_HAS_VERSION
 #        if defined(__cpp_lib_ranges)
 #            define ENTT_HAS_IDENTITY
 #            include <functional>
diff --git a/src/entt/stl/iterator.hpp b/src/entt/stl/iterator.hpp
index 4b285d4c2..70ed188ff 100644
--- a/src/entt/stl/iterator.hpp
+++ b/src/entt/stl/iterator.hpp
@@ -3,6 +3,7 @@
 
 #include <iterator>
 #include "../config/config.h"
+#include "version.hpp"
 
 /*! @cond ENTT_INTERNAL */
 namespace entt::stl {
@@ -17,9 +18,7 @@ using std::random_access_iterator_tag;
 using std::reverse_iterator;
 
 #ifndef ENTT_FORCE_STL
-#    if __has_include(<version>)
-#        include <version>
-#
+#    ifdef ENTT_HAS_VERSION
 #        if defined(__cpp_lib_ranges)
 #            define ENTT_HAS_ITERATOR_CONCEPTS
 
diff --git a/src/entt/stl/memory.hpp b/src/entt/stl/memory.hpp
index eb663d5a9..5c4f6d448 100644
--- a/src/entt/stl/memory.hpp
+++ b/src/entt/stl/memory.hpp
@@ -2,12 +2,11 @@
 #define ENTT_STL_MEMORY_HPP
 
 #include "../config/config.h"
+#include "version.hpp"
 
 /*! @cond ENTT_INTERNAL */
 #ifndef ENTT_FORCE_STL
-#    if __has_include(<version>)
-#        include <version>
-#
+#    ifdef ENTT_HAS_VERSION
 #        if defined(__cpp_lib_to_address)
 #            define ENTT_HAS_TO_ADDRESS
 #            include <memory>
diff --git a/src/entt/stl/version.hpp b/src/entt/stl/version.hpp
new file mode 100644
index 000000000..bcf9c2178
--- /dev/null
+++ b/src/entt/stl/version.hpp
@@ -0,0 +1,9 @@
+#ifndef ENTT_STL_VERSION_HPP
+#define ENTT_STL_VERSION_HPP
+
+#if __has_include(<version>)
+#    include <version>
+#    define ENTT_HAS_VERSION
+#endif
+
+#endif